Ratchet-wrench.



D. E. HAINES.

. RATGHBT WRENCH.

APPLICATION FILED OUT. 17, 1910.

1,014,463. Patented Jan. 9, 1912.

7F/T/vEssEs. I/vvE/vTcJR.

@0 6 Ma.- %m 6W. J '4 I beg COLUMBIA PLANOIJRAPHVCO" WAsmNG'mN, D. c.

DAVID E. HAINES, OF BATTLE CREEK, MICHIGAN.

RATCI-IET-WRENCH.

Specification of Letters Patent.

Application filed October 1'7, 1910.

Patented Jan. 9,1912.

Serial No. 587,505.

To all whom it may concern:

Be it known that I, DAVID E. HAINES, a citizen of the United States, residing at Battle Creek, in the county of Calhoun and State of Michigan, have invented certain new and useful Improvements in Ratchet- Wrenches, of which the following is a specification.

This invention relates to ratchet wrenches, and has among other objects, to provide a wrench of the class that will be very simple in construction, tasty in design, economical to manufacture, and one in which but a single pawl is employed to actuate the nut socket in either direction when. engaged with the ratchet, said ratchet having oppositely disposed shanks adapted to receive portable nut sockets at one end and a portable hand knob at the other.

Other objects and advantages will be hereinafter set forth and be particularly pointed out in the claim following the specification.

In the drawings forming a vpart of this specification, Figure l, is a plan view with one half, or the upper section of the side casing and handle member removed, and the thumb nut removed from the locking bolt, and shows the pawl engaging the ratchet at the right. Fig. 2, is a similar View, with an opposite jaw of the pawl engaging the ratchet. Fig. 3, is a side elevation, partially in section. Fig. 4, is a cross section on the line at, w, of Fig. 3. Fig. 5, is a perspective view of the double jawed pawl. Fig. 6, is a perspective view of the locking bolt and its nut, and Fig. 7, is a bottom side view of the nut socket.

Like marks of reference refer to corresponding parts throughout the different views, in which,

A and B, represent the side frame and handle members secured together by small screws I, I, each half of said members having an offset, or L-portion 2, a double toothed pawl C, is pivoted by a rivet or screw 3, the free end of the members joined by the aforesaid screws being slighty enlarged and rounded to form a suitable hand grip 4, by which the wrench is operated when in operation.

The pawl C, consists of a single piece of material having oppositely disposed diagonally arranged jaws 5 and 6, and within the upper surface between the aforesaid jaws and the pivot 3, an arc-shaped groove or channel 7, is formed wholly within the pawl.

This groove describes an arc concentric with the pivot 3, aforesaid.

Vertically journaled in the frame sections between the offset portions 2, the ratchet E, is mounted. This ratchet is double with reverse faced teeth as shown, and has reduced extending shanks 8 and 9, the former extending upwardly and adapted to be fitted with a portable hand knob D, the lower shank being formed square, or irregular, to which a nut socket 11, is fitted. Both the hand knob D and the nut socket 11, are retained in position by means of small springs secured to the respective parts, the free rounded ends of which engage within grooves formed within the respective ratchet shanks: the spring 12, of the knob D, fitting within the groove 13, and a spring 14, of the nut socket 11, fitting within a groove 15, as shown. The peculiar formation of these springs is such that they will readily allow the aforesaid hand knob and nut socket to be placed on, or taken off at will. Adjacent to the channel 7, of the pawl O, in the upper section of the side frame, a narrow but correspondingly formed slot 16, shown by dotted lines, is formed. The head of a locking bolt 17 is fitted within the channel 7, and its threaded end passes through the aforesaid slot of the upper casing and is fitted with the thumb nut 18. Within the channel aforesaid, and either side of the head of the bolt 17, small coil springs 19 and 20, are fitted.

In operation, to cause the pawl to actuate the ratchet E, toward the left, the thumb nut 18 and its bolt 17 is slid toward the left as shown in Fig. 1, whence the said nut is set by screwing it down until the upper section of the frame A, is securely gripped between the head of the bolt 17 and the thumb nut 18. As will be obvious, in passing the bolt toward one side of the member A, along the slot 16, either way from the center, will cause one of the springs 19 or 20, to be compressed; the compressed spring acting to depress or impinge the pawl jaw on the ratchet, opposite to the side of the compressed spring. Any movement imparted to the handle member 4, when the thumb nut and its bolt is secured either side of the center of the wrench along the slot 16, and' groove or channel 7, will cause the pawl to move the ratchet, either toward the right or to the left, as and in the manner set forth.

Having therefore set forth my improved wrench, what I claim and desire to secure by Letters Patent is:

In a ratchet wrench, the combination with the double oppositely disposed ratchet revoluble between the handle frame members, and a pawl having oppositely disposed diagonally arranged jaws adapted to engage said ratchet and pivotally mounted between said handle frame members, one of said members having an arc-shaped aperture therethrough, and said pawl having a correspondingly formed recess therein, abolt passing through the slot in said handle member and extending within the recess of said pawl, a spring fitted within said recess either side of said bolt and a thumb nut run on the upper threaded end thereof, as and for the purpose set forth.

DAVID E. HAINES.

Witnesses:

FRANK DARLING, WILLARD S. EnLLs.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, 

